Sewing-machine.



J. C. RINGE.

SEWING MACHINEA APPUCATION FILED AUG. 4. 19115.

SHEETS-SHEET i WITH/E88; v /NVENTOR 1. ci .-wew l Jahn man@ J. C. RINGE.

SEWIHNG MACHINE APPLlcATmN FILED Aus.4. 1915.

1,29y l l 8., Patented June 11, 1918.

3 SHEETS-SHEET 2.

8c2 #ma/ uw... 65.5.99.

Amm/fr LC. RNGE.

SEWING MACHINE. APPLICATIN FILED AuG.4. 1915.

l ,269g l l 8., Patentedlune 11, 1918.

3 SHEETS-SHEET 3.

JOHN o. RINGE, or samenwer, commencer', Assurance To rmi SINGERMenoreseinem@ ennemie, .e conremirion or New ninsnv.

SEVING-MACHINE.

i Spcccstion of Letters Patent.

Patented June 11., gi.

Application filed Ciiigiist ffl, 1918. SerilNo.'113,063.

T0 all whom it may am? em.'

Beit known tlizitI, Joiin C. Rune, :i citin` zen o'f the UnitedStatesfresiding :it Bridgeport, in the county of Fairfield :ind State ofConnecticut, have invented certain new :ind useful Improvements inSewing-lllneliines, of which thefollowingrl is :i speeilieiition,reference being had therein to the accompanyin drawings.

A 'his invention relates to improvements in loclestitch sewing machinesfor ellecting, :it :i single operation, three parallel seems and has forits object to provide nienns ezipiihle of producingA parallel seems oflike or iziilike leed.

In thc eiirlier use of the present class of three-needle.stitch-foiiiiine' mechanisms the loop-takers are arranged in triangularrelutionship and their coperiitingneedles in like relationship, whicharrangement of loopers and needles eeciy three parallel seams in whichthe inner seein is, of necessity, shorter at the finishing point thanare the two outer seams sind in the stitching of certain-products thisis'desirahle while in certain A.other products it is desirable 'that theseparate lines of seam formation he coinpleted at the seme point in thefabi-ie, end to accomplish the object of the present invention there isherein provided ineens for effecting the eoperetion of needles end theloop-seizing points of their respective loeptiikers in e given line :itsubstantially right angles to the iines of seam foi-finition or et an:ingle tos-eid given line.

In the aecompanyin drawings illiistrnt-- ing the invention, in t ieseveral figures of which like parte are similarly designated,

Figure 1 is e View in front side elevation 1 `ofthe right and left handloop-takers :ind

'certain elements of the actuating inechzinism of the letter' carried hvthe sewing .mw chine bed-plete, the feed-dog", its carrying bar and theright and left hund slide-plates being shown in section. 2 i e pleinView of the front end portion the sewing;

machine bed-plate With the right end .left

hand slideplates omitted to bring to' View the loop-takers, the needleor throat-plsiter `and the back slide-plete being shown in dotted lines.Fig. Bis a, View in cross-seeiionof the front end "of the sewing machinenedplete and the loop-taker actuating shaft, with the left-hand and rearside loop-takers in elevation. Fig. 4 is e plan view the needle orthront-pliite Fig. Qicomprises views, in perspective, of one ofthecomplenientzil loop-takers, vconipleinental bobbii'icase oscillatinglevers, coniplemental pinfolloivers, the loop-talker frame located hackoi the needle, and the bobbin-cese lever :id-l

jiieling plzile common to the present looptiilers with the exceptionthiinfor use in connection with the present right :ind left handloop-takers there must he provided openings :is represented hy thecircular dotfed lines, later lo he referred to. Fig. (i is ediiifrfriiinnnitic view illustrating certain changes in the lrelativearrangement of the loopseising points el" the loop-takers and eoactingineed les izo moet the requirements of the invention. Figs. 7 :and S ereviews illnstrnting like and unlike lends of seem forma.- tion,respectively.

The invention is herein shown and will he described in eoi'inection withso much of one variety of Singer commercial three-needie sewing machine:is is deemed sulicient for iin understanding of its application, :indis intended to comprise improved ineens over that represented bv Unitedrltetes patent ep plie-ation of Ferrell :ind Stevens. Serial No.

" 868.908,1iled (lctoher 27. i914.

Referring to the figures. 1 represents the sewing machine freine.provided willi the integrally foi-ined lied-plzite 2, .'-l the lower endportion of one 'form of commonly' employed needle-carrying mircontrolled to efiect recipi'ocfitoiy stitch-forming movements hy com-Amon means (not shown) 4 the i'ieedlehrecket or holder fest on theneedle-carrying bar and 5, 6 and 7 needles removably secured\ in seidneedle-holder. ,fr l

8 represents the. loop-taker actuating shaft actuated by common meansfrom one forinoi' commonly ein loved mninr or'needle-liir actuatingshaft not shown). 9, 10 andr 11 gear members carried hy said loop-takeractuating shaft. the latter gear member beingr shown iii-dotted linesonly. siiidgeni members iiieeihiner with die respective gear' members12. 13 und '14- fest on the respective loopntnlrer sln'fts l5, 16 and 17.rovided with the respective loop-takers 18, l sind 20.

fis the loop-takers :nifl the elements carried and actuated hrthelzitter. new to hep referred to. are each; :i `duplicate ofgthe,

others` except in the providing of certain openings represented hycircular dottedY lines, Fig. 5, .leter to hereerred to, said,

complemental elements will be referred to' singly and designated lin thedrawings by like numerals.

21 represents the bobbin-case lever adjusting plate fulcrumed upon a hub22 of theloop-taker frames and held against accidental movementl by thescrews, as 24, the loop-taker frame 23 .being secured to the machineframe by screws, as 25, and the loop-taker frames, as 23 adj ustablysecured by screws, as 25. 26 denotes the bobbincase oscillatin04 leverjournaled on an eccentric 27 carried by the loop-taker washer 28 held bypin 29 to rotate with the loop-taker, the plate 21 being provided withan opening 30 into which is loosely seated a pin 31 provided With afallower 32 tracking the forked opening 33 in the oscillating lever 26,which latter is provided with a liiobl/iin-easc actuating finger 34. inthesequence ot movements of the elements above referred to for edectingan opening for the needle-thrgaid loops, the eccentric 27 acts upon thebobbincase lever 26 to, through the pin 31 a pivot, oscillate thefinger' 34 which causes its free end to be moved into contact with theincline 36 of the web 37 carried by the bobbin-case 38 and oscillate thelatter suicient to place the bobbin-case stop-lug 39 central between theoppositely arranged stop-lugs as 40, depending` from the throat orneedle-plate 41, thus effecting an opening between said stop-finger andits coacting lug 400 for the passage of the thread loop, as in earlierconstructions.

To accommodate the adjustments of the loop-takers 18 and 20 so thattheir loopseizing points Will coperate with their rcspective needles 5and 7, when arranged in line with needle 6, as in Fig. 2, or in anyposition between Isaid line and the dotted line 1f-a, Fig. 6, theirbobbin-case lever adjusting plates 21 are provided with additionalopenings, as represented by dotted lines 42, so thatthe pin 31 andfollower 32 may be positioned to meet the requirements of changes intheir timing. The advantages in providing means for giving like andunlike leads to multiple seams effected at a single operation will nowbe pointed out in connection with a single product, it being evidentthat the advantages have like or similar application to productsgenerally.

Figs. 7 and 8 illustrate such portion of a womans corset as includes aportion of the stay pockets, as 43, for the commonly employed steels orother stays (not shown) and a portion of the elastic web 44 employed topermit of the lower portion of the corset expanding about the hips. lnforming the stay pockets it is sometimes desirable that the seam 45shall finish short of the point at which Vthe outer seams 46 and 47finish to better facilitate the entering of the end of the stays intothe pockets and especially is this desirable when the pockets are to beclosed by flossing or other ornamentation as indicated by 47', thedifference in lead being somewhat dependent upon the width of the stayemployed, but in the operations4 of feeding in the stays as the pocketsare being stitched, as in the cheaper grades of corsets, it is desirablethat the seams have the same lead as shown in Fig. 7. The stitching of acorset has been herein selected for demonstrating the application of theinvention as its development was in connection withsuch operations.

As the present feeding mechanism comprises one form of commonly employedfeed-dog 48 and common means for effecting itsstep-by-step feedmovements it is not deemed necessary to refer to such means, but it isdesirable to the present invention that the feed-dog be located at therear of its connnonly employed position to better present the fabric tothe action of the needles when the latter are arranged in a straightline, as in Fig. 2, and when the feed-dog is so positioned its feedingaction extends a substantial distance back of. the needles and over theloop-taker 19 and under certain adjustments of amplitude of feedmovement the feed-dog overlaps the thread bobbin 49 when in its advancedposition, lout Withdrawn from such overlapping position when, in itsretracted position or position to commenee its feed movement, thuspermitting of the convenient replenishing of the bobbinthread.

The needle-plate 41 is provided with parallel extensions or arms 50 and51 Whose inner walls are provided with guideways, as 52, into which isslidably mounted the back slide-plate 53 provided with notches or slots,as 54, comprising extensions or the feed slots, 55, to accommodate thefeed movements of the feed-dog when of an amplitude to elfect acomparatively small number of stitches to the inch, as is common in thestitching of many products, said needleplate being secured upon thebed-plate 2 by screws, ,as 56. 57 and 58 denote the front and backslide-plates, respectively.

Having thus set forth theI nature of the invention, what I claim hereinis 1. In a stitch-forming mechanism for' sewing machines, thecombination with triangularly arranged loop-takers provided withloop-seizing elements and having stitchforming movements in a givenplane, of eooperating needles. having stitch-forming movements in pathsat substantially right angles to said plane, the loop-seizing elementsot' the loop-takers coperating with the outer of said needles seizingthe loop of needlethread on a line crossing its own axis at a.substantial angle to a line intersecting the axes of the loop-takerseo'iperating with the `outer of said needles.

Miti

movements in a given Laced 1e 2. In a stitch-forming mechanism for'sewmg machines, the combination with triangularly 'arranged loop-takersprovided with4 loop-seizing elements having stitch-forming plane, ofcoperating needles having stitch-forming movements in pathsatsubstantially right angles to said plane, the loop-seizing elements ofthe looptakers cooperating with said needles to seize the loops ofneedle-thread in substantially the same horizontal and vertical planes.

3. Inga stitch-forming mechanism for sewing machines, the combinationwith triangularly` arranged loop-takers rovided with loop-seizingelements .and aving stitchforming movements in a given plane, Vofcooperating needlesfarranged in the same vertical plane Within the lielddescribed by the triangularly arranged axes of lsaid looptakers andhaving stitch-forming movements in paths substantially at right anglesto said given plane.

4. In a sewing machine, the combination with a Stitch-forming andcloth-feeding mechanism including trian ularly arranged loop-takers andcoperatlng needles, of means for supporting the fabric being acted onincluding a slide-plate located back of the line of needle actuation anda needlepllate, the latter forked to receive said slidep ate.

5. In a sewing machine, the combination with a stitch-forming andcloth-feeding mechanism including a feed-dog, triangularly arrangedloop-takers and needles cooperating with the latter to form stitches, ofmeans for supporting the fabric being acted on includin a needle-plateand a slide-plate provided with feed-dog openings, said needle-platebeing forked to receive said slideplate.

als`

In testimony whereof, I have signed my name to this specification, inthepresence of ,two subscribing Witnesses.

JOHN C. RINGE.

Witnesses:

` STANLEY N. SMITH,

H. M. BURN.

